Sheet-metal door.



PATENTED MAR. 19, 1-907. N. P. SJOBRING. SHEET METAL DOOR.

APPLICATION TILED DEO.14,1906.

2 SHEETS-SREET 1,

(Inventor,

No. 847,443. PAIENTED MAR. 19, 1907 N. P. SJOBRING.

SHEET METAL DOOR; APPLICATION FILED DEO.14,1 906.

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PATEN 1 FFIQY' SHEET-METAL DOOR.

No. 847,443. I

Specification of Letters Patent.

Patented March 19, 19.07.

Application filed December 14,1906. Serial No 347,845.

To all w/wm it may concern.

Be it known that I, NrLs .P. SJoBRrNc, a citizen of the United States, residing at Jamestown, in the county bf Chautauqua and State of New York, have invented new and useful Improvements in Sheet-Metal Doors, of which the following is a specification.

This invention relates to doors, and particularly to doors constructed of sheet metal or sheet metal with an inner lining of nonconducting and non-combustible material and also to doors constructed of sheet metal, but wherein a glass panel may be substituted for a panel of sheet metal.

Theessential objects of the present construction are to construct the door with a channel-iron 0r keeper on each side, the said irons or keepers alofig the vertical stiles of the door having their flanges cut away at points to facilitate the attachment of the door hinges and lock; also, the stiffening. or strengthening of the end sections of the door by the insertion between panel-sections and the plates which constitute said sections of angle-in 1 plates or channel members having vflat surfaces bolted or riveted to the panelsections andhaving one edge bent at right angles and adapted to bear under the inner surfaces of the end sections to brace and reinforce the same from the inside, said angleiron plates having their opposite edges slightly bent outwardly, to form tongues which engagelocking-flanges formed on the intugned inner edges of the molding which is fornie'd along the inner edges of the end sections f.

A further object of the present invention is .to provide means for internally bracing the vertical stiles of the door, said bracing means serving also to retain in place along the inner sides of said stiles sheets of asbestos or other 7 I arate, and supplemental molding-,sectibn may be employed-for retaining the glass panel in place, said' supplemental molding-section having an elastic or spring latch or tongue adapted to engage a groove or catch formed i in the side molding-pieces, whoseouter edges interlock with the plates which constitute the ivertical stiles.

7 With these and other objects in view my invention consists of the parts and the constructions, arrangements, and combinations of parts,-which 1 will hereinafter describe and claim.

In the accompanying drawings, forming part of this specification, and in which similar reference characters indicate like parts in the several views, Figure 1 is'a side elevation is a vertical sectional view of the same on the line 2 2 of Fig. 1. Fig. 3 is a cross-sectional view on the line 3 3 of Fig. 1. Fig. 4 is a cross-sectional view on the line 4 4 of Fig. 1. Fig. 5 is a broken perspective view showing one corner of the door. Fig. 6 represents in perspective one of the keepers or channeli-rons 12 removed. Fig. 7 is a perspective view ofa part of one of the angular, bracinglates 18. Fig. 8 is a detail of one of the eepers 12. Fig. 9 is a cross-sectional view of a door wherein a glass panel is substituted for the mctalpanel. Fig. 10 is an enlarged sectional detail of the seam between the side .stile and panels.

The design of door shown is well known, in that it 1s similarly paneled on opposite s des, though the side sections or stiles are mteof a door embodying my invention. Fig- 2 grally formed to present in one body both sides. of the door. This, however, is wellknown in the art and does not materially differ from my former patent, No. 809,145, dated January 2, 1906. The stiles are substantially identical in construction, and a specific description of one will be suflicient for both. Each of said stiles is formed of a single strip of metal of appropriate shape in cross-section and having a length equal to the desired height of the door. As thus constructed the stiles comprise the parallel plates or strips 4 and 5, spaced apart a distance about equal to the desired thickness of the door from front to roar, the inner edges of these plates or strips being inturned and fashioned with appropriate locking-flanges 6.

. When constructing the door with a metal panel, .as in Figs. 2, 3, and 4, the panel-seca wall 10 and thence again bent at right angles and interlocking with the aforesaid loci:- ing flange 6, formed along the gamer edge of the sti'lesseetion, the constructionbei very siini-lar to thatshown'and described nTmy former patents, No. 809,145, dateddan'iiary 2,1906, and No. 835,478, dated November 6,

1906,'with'eit h er of which pate hted doors the present impinvements areadapted to be apstruct-ed, and their-inner, portions are oilset the curve or molding 9, fashione at 15 to form a shoulder, and the remaining portion interior to this shoulder is formed in a curve or molding 16', which col-res onds to on. the outer side edges of the paae'lgsection, or inner edges ofwhich molding WithJand f ed iioselyjngainsti the panel-sec tion. Thechrvsormoldings9 and 16 form a relief'contour between the outer edges of the panel and the adjacent inner portions of the stile-sections. a

In order that the plates"15, which comprise the end sections of the door may be maintained in their proper spaced and to reinforce or brace these plates against pressure fromxwithout 'or'inward war 'ing, I ocate interior to each plate the ang eron strip 18. (Shown in- Fig. 7.) These strips lie crosswise of each end of the door justunder the lower or molding sections 16. Each strip extends the full length of an end section plate 15, and it has a series of holes 18 made through its flat central portion'adapted to receive bolts or rivets 18 or likefastening means, by which the angle-iron strip may be secured firmly to the panel-sections 7.

The outer longitudinal edge of each of the strips 18 is bent at right angles to the flat central body I ortion of the strip to form an outstanding ange 18 whose length ofprojection is such that its free edge bears'under directly in contact with the innerside of the adjacent plate 15 of the end section of the door, and thereby forms an abutment or stop to resist any inward movement of said plate. The op osite free edge of this angle-iron strip 18 is slightly bent outwardly, as at 18, to form a tongue which is designed to engage in the locking-flange 17, formed in the inner free edge of the molding-section of the plates 15 of the end sections of the door. Similar angle-iron strips, arranged as before described, are also employed for any transverse intermediate sections with which the door forme 16. beiiig bent or-fasliioned to form af lhcmng-fla e 16', the terminal edge of jishich 1s paral elrelation.

' semestheir flanges cut away at points, as at 12 to allow the usual hinges and the look to pass thron hi to the outside and to be appropriate y secured.

Referring now to the cross-sectional views,

Figs. 3, 4, and 9, it will be observed that within the hollow stiles between the plates -t and 5 thereof I rivet or otherwise secure suitable channel-irons 30, whose iian cs arranged parallel with theplates a one 5 and bear a ainst the inner-surfaces of a lining 3?, (T of sheets of asbestos or other non conductin "and indestructible material, .whereby t e door is rendered more certainly fireproof, this liningoccupying the space he"- tween the lockingdianges of the stiles and the keepers at the outer of said stiles. When it'is desired to construct the aforssaid metal door with a glass panel, shown at 26 in Fig. 9, 'Lform the molding portions along the .mner edges of the side stiles of separate pieces 24.;and'25, the. said piece 24- bemg given an'ydesired curvature or forms tion in cross-section to form the moldings at both sides of the door and havin 'itsouter edges to interlock with the locking-flanges formed along the inner ed out the stile-section or plates, 4 and 5. ear the vertical central plane of the piece 24 and the corresponding plane of the sidestile the said piece 24 is bent to 'form a vertical inwardly-e2"- tending wall 24",at the base of which the piece 24 is bent laterally to form a horizontal wall 24 and then again bent or fashioned to form a groove '01 channel 2 1 between the horizontal wall and the upper edge of the curved or molding portion at the opposite side of the door. 7 p

The vertical wall 24 of the piece 24 forms one side of the channel or recess in which the edge Bf the glass panel 26 is fitted, thelother Walls of this channel being fornied"b y the companion piece 25 of the molding-sections. This piece 25 consists of a strip, one edge portion of which is adapted to overlie the 11pper curved portion of the piece 24 on that side of thedoor, and it is given a curve corresponding to the inner portion of the piece 24- at the opposite side of the door, the said piece 25' being bent to form a vertical wall 25, which is parallel with the corresponding wall 24 of the iece 24 and is again bent at the base of said wall to form the-horizontal wall 25 of the recess in which the edge of the glass panel is fitted, the inner side edge portion of the piece 25 being thence bent under the horizontal wall 25 and between it and- I go v the horizontal wall'24 of the piece '24 and 1 has its extremity turned to form a the or side of the door on which said piece is located panel-sections interlocking with the stile-secvided with an ornamental -molding along the piece 25 mayIif desired, be secured to wardly-extending flanges bearing edgewise .and extending transversely of the door, said flange 25?, which is adapted to spring into locking engagement with the groove or channel 24 of the piece 24. The outer edge of the corresponding and matching portion of the piece-24' by soldering, brazing, riveting, or other well-known means.

It'will thus be seen .that for a glass panel door each'stile is made of two pieces which fit together by an endwise movement of one member relative to the other, one member haying a seat for the edge of the glass panel. and forming also the molding-section of saidstile, and a supplemental companion piece. 25, which forms a part of the molding on the and which may be fitted against and under the already-seated glass and has a member, as a spring-tongue, adapted to spring into locking engagement with the companion molding-section to securely hold the glass and form an attractive finish for the'portion of the door surrounding the glass. The piece 25 may also be detachedwithout much difliculty to remove the glass from the door;

It will be understood that each side stile has the molding formation above described and that a corresponding formationqnay be. used about the inner edges of the end sections.

Having thus described my invention, what 1 claim as new, and desire to secure by Letters Patent, is

1r A door comprising stile-sections, crosssections interlocking with the stile-sections and extending transversely of the door,

tions, and angle-iron piec'es lying parallel with the panel-sections and having outagainst the inner sides of the cross-sections whereby the cross-sections, are braced against pressure from the exterior.

- 2. A door comprising stile-sections, end sections/interlocking with the stile-sections F sections, the said molding portions ofthe end posed between the end sections and the panelsections and secured to the panel-sections,

flange of the molding portion of end section, and the other edge bearing edgewise against the inner-side or" the end section to form an internal brace' and to maintain the end section in proper position.

4. In a sheet-metal door construction the tions, and end sections parallel with and .spaced from the panel-section, of angle-iron strips interposed between the end sections and panelesections, said strips being secured to the panel-sections andeach having an edge portion turned substantially at right angles and bearing against-the inner side of the adjacent end section whereby said end and inward pressure on said section is resisted.

combination with stile-sections, end sections, anel-sections, and interlocking connections ietweeii' the stile-sections and the end sections and panel-sections, of .a channel-iron or keeper secured between the outer edges of the stile-sections, said channel-irons having their flanges cut away at points,-one for the for the application of the door-lock. 6. In a sheet-metal door construction, the

tions, and a panel-section, of a' lining of non conducting material extending along the interior of thestiles, and a rigid 'backin between opposite members of the lining a apted to retain the'lining in position.

7. In a sheet-metal door construction hav ing hollow stiles and ends, and an intermediate panel, of an interior lining'consistin of a sheet of non-conducting and indestructi le stile-sections and end sections being promaterial extending along each inner side of the stile, and a channel-iron intermediate of the sheets and having its flanges backing inner sides of the stiles.

8. In a sheet-metal door construction the combination with stile-sections having locking-flanges along their inner edges, end sec- 'tions, molding members extending along the inner edges of the stiles and end sections, the

flanges to interlock with the'flanges of said stile sections, a panel-section, said molding members of the stile-sections having recessed seats for the edges of the panel-section, and a supplemental molding-section coacting with a molding-section on one side of the-door to complete the molding on that side said sup:

sponding to the likegportions of the panelplemental molding-section having a vertical 5. In a sheet-metal door construction the' combination with hollow stiles and end secagainst'the sheets to hold them against the sections being provided with a c'bncealed docking-flange, and angle-iron strips inter-- I I i ,said stripseach hav ng outturned edges, one

'ofsaid edges engaging with the said lockingr combination with stile-sections, panel-secsection is maintained in its normal position application of the door-hinges and the other molding members of. the stile-sections having -alleoacting with a similar ivall on the 0ppomy hand in presence of two subscribing witslte molding-section to form the recess for nesses. the edge of the panel, and having a latch A T member to spring into engagement with a NILS P 5 catch member of said opposite molding-see- W'itnesses:

tion; D. A. LUND UEST,

lri'testilhony whereof I have hereunt e setg *"HJALMAN, SANDBERG 

